A high-speed array signal processing device based on optical transmission

Abstract

The present invention discloses a high-speed array signal processing device based on optical transmission, belonging to the field of array signal processing technology. The present invention comprises an optical switching unit, first to sixth processing units, a synchronization control unit, and a backplane unit. The first to sixth processing units are implemented based on FPGAs, and the synchronization control unit is implemented based on an embedded processor. The first to fourth processing units each include a beamforming processor, a calibration filter, and a synthesis filter. The fifth processing unit includes a direction-finding processor and an FFT processor. The sixth processing unit includes a modulation processor and a DDC processor. The present invention utilizes an integrated design of optical transmission, switching, and high-speed processing, resulting in a wide processing bandwidth and enabling efficient real-time processing in complex environments.

Description

Technical Field

[0001] The present invention relates to the technical field of array signal processing, and in particular to a high-speed array signal processing device based on optical transmission. Background Art

[0002] Traditional array signal processing methods rely on electrical signal transmission. However, as the number of array processing channels increases, the number, volume, and weight of cables increase, making it difficult to meet the demands of high-capacity, low-latency, and large-scale data processing. Currently, array signal processing devices primarily rely on cable transmission, which is incapable of supporting real-time data transmission and exchange, as well as efficient big data computing, in large, integrated array processing systems.

[0003] Based on the above situation, array signal processing systems require multi-channel parallel processing. With the development of array antennas, transceiver component modules, and high-speed data transmission technology, array signal processing is developing towards high levels such as broadband and high real-time. Therefore, a high-speed array signal processing device is urgently needed. Summary of the Invention

[0004] In view of this, the present invention proposes an array signal high-speed processing device based on optical transmission. The present invention adopts an integrated design of optical transmission, switching and high-speed processing, has a wide processing bandwidth, and can achieve efficient real-time processing in complex environments.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A high-speed array signal processing device based on optical transmission, comprising an optical switching unit 1, a synchronization control unit 2, a backplane unit 3, and first to sixth processing units 4 to 9; the first to sixth processing units 4 to 9 are implemented based on FPGAs, and the synchronization control unit 2 is implemented based on an embedded processor;

[0007] The optical switching unit 1 receives m channels of sampled data optical signals sent from the outside, and after internal switching, outputs the m channels of sampled data optical signals to the first to fourth processing units 4 to 7 respectively;

[0008] The first to fourth processing units 4 to 7 respectively receive n-channel sampling data optical signals sent by the optical switching unit 1, and perform beam synthesis on the n-channel sampling data optical signals to generate p beams, and then transmit the p beams to the optical switching unit 1, where m=4n, n is an integer multiple of p, and m, n and p are all integers; the optical switching unit 1 is also responsible for transmitting the 4p beams to the fifth processing unit 8 and the sixth processing unit 9 respectively;

[0009] The fifth processing unit 8 receives 2p beams sent by the optical switching unit 1, performs direction finding processing on the received 2p beams, and then sends the direction finding processing result to the optical switching unit 1. The optical switching unit 1 sends the direction finding processing result to the external device;

[0010] The sixth processing unit 9 receives 2p beams sent by the optical switching unit 1, demodulates the received 2p beams, and then sends the demodulation results to the optical switching unit 1. The optical switching unit 1 sends the demodulation results to the external device.

[0011] The synchronization control unit 2 is used to send synchronization control signals to the first to sixth processing units 4 to 9, and output the working status of the first to sixth processing units 4 to 9 through the network interface;

[0012] The backplane unit 3 is used to implement information exchange between the synchronization control unit 2 and the first to sixth processing units 4 to 9.

[0013] Furthermore, the first to fourth processing units 4 to 7 all include an optical / electrical converter, a beam synthesis processor, n calibration filters and n synthesis filters, wherein the optical / electrical converter is responsible for receiving the n-channel sampling data optical signal sent by the optical switching unit 1, and after performing photoelectric conversion into n-channel sampling data, they are sent to the n calibration filters respectively. The n calibration filters respectively receive one channel of sampling data sent by the optical / electrical converter and perform calibration processing. After the calibration processing, one channel of sampling data is correspondingly output to one synthesis filter for synthesis filtering processing. The n-channel synthesis filtering processing results are output to the synthesis processor to generate p-channel beam data. After the p-channel beam data is electro-optically converted by the optical / electrical converter, it is converted into p beams and sent to the optical switching unit 1.

[0014] Furthermore, the fifth processing unit 8 includes an optical / electrical converter, a direction finding processor and 2p FFT processors; wherein the optical / electrical converter is responsible for receiving the 2p beams sent by the optical switching unit 1, and after performing optoelectronic conversion into 2p beam data, sends them to the 2p FFT processors respectively. The 2p FFT processors respectively receive one beam data sent by the optical / electrical converter and perform FFT processing. After the 2p FFT processing results are output to the direction finding processor to complete the direction finding processing, they are converted from electrical to optical by the optical / electrical converter and sent to the optical switching unit 1.

[0015] Furthermore, the sixth processing unit 9 includes an optical / electrical converter, a demodulation processor and 2p DDC processors, wherein the optical / electrical converter is responsible for receiving the 2p beams sent by the optical switching unit 1, and after performing photoelectric conversion into 2p beam data, sends them to the 2p DDC processors respectively. The 2p DDC processors respectively receive one beam data sent by the optical / electrical converter and perform DDC processing. After the 2p DDC processing results are output to the demodulation processor to complete the demodulation processing, they are converted from electrical to optical by the optical / electrical converter and sent to the optical switching unit 1.

[0016] Furthermore, the synchronization control unit 2 first receives a working instruction to perform equipment self-test. After the equipment self-test status is normal, it controls the first processing unit to the sixth processing unit 4 to 9 to operate in a specified mode, and then sends a synchronization control signal to the first processing unit to the sixth processing unit 4 to 9, and periodically reads back the working status of the first processing unit to the sixth processing unit 4 to 9, and outputs the working status through the network interface.

[0017] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] 1. This invention receives data via optical fiber, exchanges it internally, and transmits the signal to the processing unit for photoelectric conversion. The sampled data is then subjected to broadband processing. The external data interface uses a unified optical interface design, solving the problems of low data capacity, numerous interfaces, and poor real-time performance of traditional broadband processing equipment.

[0019] 2. The present invention has multi-channel high-speed data transmission and switching capabilities through the provision of optical switching units, and can perform parallel processing of multi-channel broadband digital intermediate frequency signals.

[0020] 3. The device of the present invention has high integration, high scalability, strong data transmission capability, and is suitable for large array processing platforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a principle block diagram of a high-speed array signal processing device based on optical transmission in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] A high-speed processing device based on optical transmission, such as Figure 1 As shown, it includes an optical switching unit 1, a synchronization control unit 2, a backplane unit 3, and first to sixth processing units 4 to 9; the processing units 4 to 9 are implemented based on FPGA, and the synchronization control unit 2 is implemented based on an embedded processor;

[0024] In this embodiment, the optical switching unit 1, synchronization control unit 2, backplane unit 3, and processing units 4-9 are all made of commercially available integrated circuits. Specifically, the synchronization control unit 1 uses the commercially available FT-M6678N chip from the National University of Defense Technology of the People's Liberation Army, and the processing units 4-9 use the FPGA chip JFM7VX690T from Shanghai Fudan Microelectronics Group Co., Ltd.

[0025] The optical switching unit 1 is interconnected with the first to sixth processing units 4 to 9 via optical signals;

[0026] The synchronization control unit 2 outputs a synchronization control signal to the first to sixth processing units 4 to 9;

[0027] The optical switching unit 1 switches the received sampled data optical signal internally and then outputs the sampled data optical signal to the first to fourth processing units 4 to 7;

[0028] The first processing unit 4 receives the 1st to 24th sampling data optical signals through the optical fiber, generates 24 sampling data after the 24 sampling data optical signals are photoelectrically converted, and performs beam synthesis to generate 1 to 6 beams, which are output to the optical switching unit 1 through the optical fiber;

[0029] The second processing unit 5 receives the 25th to 48th sampling data optical signals through the optical fiber, generates 24 sampling data after photoelectric conversion of the 24 sampling data optical signals, and performs beam synthesis to generate 7 to 12 beams, which are output to the optical switching unit 1 through the optical fiber;

[0030] The third processing unit 6 receives the 49th to 72nd sampling data optical signals through the optical fiber, generates 24 sampling data after photoelectric conversion of the 24 sampling data optical signals, and performs beam synthesis to generate 13 to 18 beams, which are output to the optical switching unit 1 through the optical fiber;

[0031] The fourth processing unit 7 receives the 73rd to 96th sampling data optical signals through the optical fiber, generates 24 sampling data after photoelectric conversion of the 24 sampling data optical signals, and performs beam synthesis to generate 19 to 24 beams, which are output to the optical switching unit 1 through the optical fiber;

[0032] The optical switching unit 1 outputs the received 1 to 12 beams to the fifth processing unit 8 through the optical fiber for direction finding processing. The processing result is output to the optical switching unit 1 through the optical fiber, and the optical switching unit 1 outputs it through the fiber optic switch;

[0033] The optical switching unit 1 outputs the received 13 to 24 beams to the sixth processing unit 9 via the optical fiber for demodulation processing, and the processing result is output to the optical switching unit 1 via the optical fiber, and the optical switching unit 1 outputs it via the optical fiber;

[0034] The first to fourth processing units 4 to 7 each include an optical / electrical converter implemented based on FPGA, a beam synthesis processor, 24 calibration filters, and 24 synthesis filters. The optical / electrical converter is used to convert the sampled data optical signal into sampled data and convert the beam data into beams. The 24 calibration filters receive 24 channels of sampled data. The sampled data enter the 24 calibration filters for calibration processing and then are sent to the synthesis filter for filtering processing. The 24-channel synthesis filtering results enter the synthesis processor to generate 6 beam data, which are output to the optical switching unit 1 through optical fiber after electro-optical conversion.

[0035] The fifth processing unit 8 includes an optical / electrical converter implemented based on FPGA, a direction finding processor, and 12 FFT processors. The optical / electrical converter is used to convert the beam into beam data, and the direction finding processing results are electrically converted to optical and sent to the optical switching unit 1. The 12 FFT processors receive 12 channels of beam data, and the 12 FFT processing results are parallelly fed into the direction finding processor to complete the direction finding processing.

[0036] The sixth processing unit 9 includes an optical / electrical converter, a demodulation processor, and 12 DDC processors implemented based on FPGA. The optical / electrical converter is used to convert the beam into beam data, and the demodulation processing results are converted from electrical to optical and sent to the optical switching unit 1. The 12 DDC processors receive 12 channels of beam data, and the 12 channels of DDC processing results enter the demodulation processor to complete the demodulation processing.

[0037] The synchronization control unit 2 is used to execute the following procedures:

[0038] 1) Receive the work instruction, and go to step 2) after the equipment self-check status is normal;

[0039] 2) Control the first to sixth processing units 4 to 9 to operate in a specified mode, and then proceed to step 3);

[0040] 3) Control the output synchronization signal to the first to sixth processing units 4 to 9, and then go to step 4);

[0041] 4) Read back the working status of the first to sixth processing units 4 to 9 at regular intervals and output the working status data through a network interface.

[0042] In summary, this method adopts an integrated design of optical transmission, switching and high-speed processing, has a wide processing bandwidth, and can achieve efficient real-time processing in complex environments.

[0043] Those skilled in the art will appreciate that the embodiments described are intended to help readers understand the principles of the present invention and should be understood that the scope of protection of the present invention is not limited to the embodiments described. It will be apparent to those skilled in the art that various modifications and variations are possible in the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A high-speed array signal processing device based on optical transmission, characterized in that: It comprises an optical switching unit (1), a synchronization control unit (2), a backplane unit (3), and a first processing unit to a sixth processing unit (4 to 9); the first processing unit to the sixth processing unit (4 to 9) are implemented based on FPGA, and the synchronization control unit (2) is implemented based on an embedded processor; The optical switching unit (1) receives m channels of sampling data optical signals sent from the outside, and after internal switching, outputs the m channels of sampling data optical signals to the first processing unit to the fourth processing unit (4-7) respectively; The first to fourth processing units (4-7) respectively receive n-channel sampling data optical signals sent by the optical switching unit (1), and perform beam synthesis on the n-channel sampling data optical signals to generate p beams, and then transmit the p beams to the optical switching unit (1), wherein m=4n, n is an integer multiple of p, and m, n and p are all integers; the optical switching unit (1) is also responsible for transmitting the 4p beams to the fifth processing unit (8) and the sixth processing unit (9) respectively; The first to fourth processing units (4-7) each include an optical / electrical converter, a beam synthesis processor, n calibration filters, and n synthesis filters, wherein the optical / electrical converter is responsible for receiving n-channel sampling data optical signals sent by the optical switching unit (1), and after performing photoelectric conversion into n-channel sampling data, respectively sends them to the n calibration filters, the n calibration filters respectively receive one channel of sampling data sent by the optical / electrical converter and perform calibration processing, and the one channel of sampling data after calibration processing is correspondingly output to one synthesis filter for synthesis filtering processing, and the n-channel synthesis filtering processing results are output to the synthesis processor to generate p-channel beam data, and the p-channel beam data are converted into p beams after being subjected to electro-optical conversion by the optical / electrical converter and sent to the optical switching unit (1); The fifth processing unit (8) receives 2p beams sent by the optical switching unit (1), performs direction finding processing on the received 2p beams, and then sends the direction finding processing result to the optical switching unit (1), and the optical switching unit (1) sends the direction finding processing result to the external device; The fifth processing unit (8) includes an optical / electrical converter, a direction finding processor and 2p FFT processors; wherein the optical / electrical converter is responsible for receiving the 2p beams sent by the optical switching unit (1), converting them into 2p beam data after photoelectric conversion and sending them to the 2p FFT processors respectively, and the 2p FFT processors respectively receive one beam data sent by the optical / electrical converter and perform FFT processing, and the 2p FFT processing results are output to the direction finding processor after the direction finding processing is completed, and then the optical / electrical converter performs electrical-optical conversion and sends them to the optical switching unit (1). The sixth processing unit (9) receives 2p beams sent by the optical switching unit (1), performs demodulation processing on the received 2p beams, and then sends the demodulation processing result to the optical switching unit (1), and the optical switching unit (1) sends the demodulation processing result to the external device; The sixth processing unit (9) includes an optical / electrical converter, a demodulation processor and 2p DDC processors, wherein the optical / electrical converter is responsible for receiving the 2p beams sent by the optical switching unit (1), converting them into 2p beam data after photoelectric conversion and sending them to the 2p DDC processors respectively, and the 2p DDC processors respectively receive one beam data sent by the optical / electrical converter and perform DDC processing, and the 2p DDC processing results are output to the demodulation processor after completing the demodulation processing, and then undergo electrical-optical conversion via the optical / electrical converter and sent to the optical switching unit (1); The synchronization control unit (2) is used to send synchronization control signals to the first to sixth processing units (4 to 9), and output the working states of the first to sixth processing units (4 to 9) through a network interface; The backplane unit (3) is used to realize information interaction between the synchronization control unit (2) and the first to sixth processing units (4 to 9).

2. The high-speed array signal processing device based on optical transmission according to claim 1, characterized in that: The synchronization control unit (2) first receives a working instruction to perform a self-check of the equipment, and controls the first to sixth processing units (4 to 9) to operate in a specified mode after the self-check status of the equipment is normal, and then sends a synchronization control signal to the first to sixth processing units (4 to 9), and periodically reads back the working status of the first to sixth processing units (4 to 9), and outputs the working status through a network interface.

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